Added support for the Dataflash mounted on the XPLAIN board. Added new XPLAIN_REV1 board target for the first revision XPLAIN board, which used a different (smaller) Dataflash IC to later revisions.

2009-12-03 08:59:12 +00:00 · 2009-12-03 08:59:12 +00:00 · bae00a3d42
commit bae00a3d42
parent f1baf12fae
11 changed files with 245 additions and 7 deletions
--- a/LUFA/Drivers/Board/XPLAIN/Dataflash.h
+++ b/LUFA/Drivers/Board/XPLAIN/Dataflash.h
@ -0,0 +1,124 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2009.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, and distribute this software
+  and its documentation for any purpose and without fee is hereby
+  granted, provided that the above copyright notice appear in all
+  copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Board specific Dataflash driver header for the XPLAIN.
+ *
+ *  \note This file should not be included directly. It is automatically included as needed by the dataflash driver
+ *        dispatch header located in LUFA/Drivers/Board/Dataflash.h.
+ */
+
+/** \ingroup Group_Dataflash
+ *  @defgroup Group_Dataflash_XPLAIN XPLAIN
+ *
+ *  @{
+ */
+
+#ifndef __DATAFLASH_XPLAIN_H__
+#define __DATAFLASH_XPLAIN_H__
+
+	/* Includes: */
+		#include "AT45DB642D.h"
+
+	/* Preprocessor Checks: */
+		#if !defined(INCLUDE_FROM_DATAFLASH_H)
+			#error Do not include this file directly. Include LUFA/Drivers/Board/Dataflash.h instead.
+		#endif
+		
+	/* Private Interface - For use in library only: */
+	#if !defined(__DOXYGEN__)
+		/* Macros: */
+			#define DATAFLASH_CHIPCS_MASK                (1 << 5)
+			#define DATAFLASH_CHIPCS_DDR                 DDRB
+			#define DATAFLASH_CHIPCS_PORT                PORTB
+	#endif
+	
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Constant indicating the total number of dataflash ICs mounted on the selected board. */
+			#define DATAFLASH_TOTALCHIPS                 1
+
+			/** Mask for no dataflash chip selected. */
+			#define DATAFLASH_NO_CHIP                    DATAFLASH_CHIPCS_MASK
+
+			/** Mask for the first dataflash chip selected. */
+			#define DATAFLASH_CHIP1                      (1 << 5)
+
+			#if BOAD == XPLAIN_REV1
+				#define DATAFLASH_PAGE_SIZE              256
+
+				#define DATAFLASH_PAGES                  2048							
+			#else
+				/** Internal main memory page size for the board's dataflash ICs. */
+				#define DATAFLASH_PAGE_SIZE              1024
+
+				/** Total number of pages inside each of the board's dataflash ICs. */
+				#define DATAFLASH_PAGES                  8192			
+			#endif
+			
+		/* Inline Functions: */
+			/** Selects a dataflash IC from the given page number, which should range from 0 to
+			 *  ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1). For boards containing only one
+			 *  dataflash IC, this will select DATAFLASH_CHIP1. If the given page number is outside
+			 *  the total number of pages contained in the boards dataflash ICs, all dataflash ICs
+			 *  are deselected.
+			 *
+			 *  \param[in] PageAddress  Address of the page to manipulate, ranging from
+			 *                          ((DATAFLASH_PAGES * DATAFLASH_TOTALCHIPS) - 1).
+			 */
+			static inline void Dataflash_SelectChipFromPage(const uint16_t PageAddress)
+			{
+				Dataflash_DeselectChip();
+				
+				if (PageAddress >= DATAFLASH_PAGES)
+				  return;
+
+				Dataflash_SelectChip(DATAFLASH_CHIP1);
+			}
+
+			/** Sends a set of page and buffer address bytes to the currently selected dataflash IC, for use with
+			 *  dataflash commands which require a complete 24-byte address.
+			 *
+			 *  \param[in] PageAddress  Page address within the selected dataflash IC
+			 *  \param[in] BufferByte   Address within the dataflash's buffer
+			 */
+			static inline void Dataflash_SendAddressBytes(uint16_t PageAddress, const uint16_t BufferByte)
+			{	
+				PageAddress >>= 1;
+				
+				Dataflash_SendByte(PageAddress >> 5);
+				Dataflash_SendByte((PageAddress << 3) | (BufferByte >> 8));
+				Dataflash_SendByte(BufferByte);
+			}		
+
+#endif
+
+/** @} */